Astronomy:622 Esther
From HandWiki
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 13 November 1906 |
| Designations | |
| (622) Esther | |
| Named after | Esther (biblical figure)[1] |
| 1906 WP | |
| Minor planet category | main-belt · (inner) |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.40 yr (39959 d) |
| |{{{apsis}}}|helion}} | 2.9999 astronomical unit|AU (448.78 Gm) |
| |{{{apsis}}}|helion}} | 1.8313 AU (273.96 Gm) |
| 2.4156 AU (361.37 Gm) | |
| Eccentricity | 0.24189 |
| Orbital period | 3.75 yr (1371.3 d) |
| Mean anomaly | 93.681° |
| Mean motion | 0° 15m 45.072s / day |
| Inclination | 8.6435° |
| Longitude of ascending node | 142.046° |
| 256.687° | |
| Earth MOID | 0.859795 AU (128.6235 Gm) |
| Jupiter MOID | 2.48023 AU (371.037 Gm) |
| TJupiter | 3.461 |
| Physical characteristics[3] | |
| Dimensions | 40 × 24 × 24 km ± 26% 29±8 km |
| Sidereal rotation period | 47.5 h (1.98 d) |
| S-type asteroid | |
| Absolute magnitude (H) | 10.3 |
622 Esther is a minor planet orbiting the Sun.
The asteroid is named after the biblical figure Esther.[1]
In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.11 AU. The resulting data yielded an effective diameter of 29 ± 8 km.[3]
References
- ↑ 1.0 1.1 Lutz D. Schmadel (2003). Dictionary of Minor Planet Names (Fifth ed.). Heidelberg, N. Y: Springer Science & Business Media. p. 63. ISBN 978-3-540-00238-3. https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA63.
- ↑ "622 Esther (1906 WP)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=622;cad=1.
- ↑ 3.0 3.1 Magri, Christopher et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003", Icarus 186 (1): 126–151, doi:10.1016/j.icarus.2006.08.018, Bibcode: 2007Icar..186..126M, http://echo.jpl.nasa.gov/asteroids/MBAs/magri.etal.2007.mbas.pdf, retrieved 2015-04-14.
External links
- 622 Esther at AstDyS-2, Asteroids—Dynamic Site
- 622 Esther at the JPL Small-Body Database
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